STS-121 Mission Profile Shuttle Crew

Shuttle CrewThe seven STS-121 astronauts take a break from training to pose for the crew portrait. From the left are astronauts Stephanie Wilson, Michael Fossum, both mission specialists; Steven Lindsey, commander; Piers Sellers, mission specialist; Mark Kelly, pilot; European Space Agency astronaut Thomas Reiter of Germany; and Lisa Nowak, both mission specialists. (Photo: NASA)Commander: Steve